Urogenital Malformations Associated with Anorexia Nervosa

Abstract

Lindsten (5), Mellbin (7), and Pitts and Guze (8) have described a total of three cases of anorexia nervosa occurring in conjunction with gonosomal aneuploidy (Turner's syndrome or gonadal dysgenesis with XO sex chromosome pattern). The incidence of both conditions is low, and the small likelihood of their concurrent appearance in one individual by chance can be estimated from the following figures. According to Maclean et al. (6), the XO chromosome abnormality occurs in four out of 10,000 live births. Baikie et al. (1) have found that the incidence of the XO gonosome pattern in the general population is not significantly different from that at birth. Anorexia nervosa has an average annual incidence of 45 (Theander (9)) or 61 (Kidd and Wood (4)) cases per 10,000,000 people. On the assumption that the two conditions are independent, the probability of their occurring together would therefore be 0.18 to 0.24/100,000,000. Since the incidence data for the XO anomaly and for anorexia nervosa were obtained from different populations, it must be recognized that these figures are only order of magnitude estimates. Nevertheless, we considered it of interest to examine the available case records of anorexia nervosa patients seen at the University of Iowa Hospitals from 1920 to 1972 for Turner's syndrome and other anomalies of the urogenital tract.